html,
body,
#root {
  height: 100%;
}

.layout {
  display: flex;
  height: 100%;
}

.layout .left {
  width: 200px;
  height: 100%;
  background-color: pink;
}

.layout .right {
  flex: 1;
  height: 100%;
  background-color: green;
}
